23.4 Mounting alternatives IP11721-1 v123.4.1 Flush mounting IP10303-1 v123.4.1.1 Overview M11967-3 v5The flush mounting kit can be used for case sizes:• 1/2 x 19”• 3/4 x 19”• 1/1 x 19”• 1/4 x 19” (RHGS6 6U)Only a single case can be mounted in each cut-out on the cubicle panel, for class IP54protection. The screws from the IED shall be used to fasten the fasteners to the IED.Flush mounting cannot be used for side-by-side mounted IEDs whenIP54 class must be fulfilled. Only IP20 class can be obtained whenmounting two cases side-by-side in one (1) cut-out.To obtain IP54 class protection, an additional factory mounted sealingmust be ordered when ordering the IED.Section 23 1MRK 511 408-UUS AIED hardware860 Phasor measurement unit RES670 2.2 ANSITechnical manual